Support build with Qt5.

CMakeLists.txt

@@ -105,13 +105,48 @@ set(CFG_DOCDIR ${CMAKE_INSTALL_PREFIX_SLASH}${WITH_DOCDIR})
 set(CFG_TRANSLATIONSDIR ${CMAKE_INSTALL_PREFIX_SLASH}${WITH_TRANSLATIONSDIR})
 
 cmake_minimum_required(VERSION 2.8)
-set(_QT4_COMPONENTS QtCore QtGui QtNetwork QtXml)
-if (WIN32)
-  set(QT_USE_QTMAIN TRUE)
-endif (WIN32)
-set(QT_USE_QTDBUS ${WITH_DBUS})
-find_package(Qt4 COMPONENTS ${_QT4_COMPONENTS} REQUIRED)
-include (${QT_USE_FILE})
+string(REGEX MATCH "^.*qt5" _qt5Dir "${QT_QMAKE_EXECUTABLE}")
+if (_qt5Dir)
+  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fPIC")
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fPIC")
+  set(Qt5Core_DIR "${_qt5Dir}/lib/cmake/Qt5Core")
+  set(Qt5Gui_DIR "${_qt5Dir}/lib/cmake/Qt5Gui")
+  set(Qt5Widgets_DIR "${_qt5Dir}/lib/cmake/Qt5Widgets")
+  set(Qt5Network_DIR "${_qt5Dir}/lib/cmake/Qt5Network")
+  set(Qt5Xml_DIR "${_qt5Dir}/lib/cmake/Qt5Xml")
+  set(Qt5LinguistTools_DIR "${_qt5Dir}/lib/cmake/Qt5LinguistTools")
+  set(QT_INCLUDES)
+  set(QT_DEFINITIONS)
+  set(QT_LIBRARIES)
+  foreach (_qt5Component Core Gui Widgets Network Xml LinguistTools)
+    find_package("Qt5${_qt5Component}")
+    set(QT_INCLUDES ${QT_INCLUDES} ${Qt5${_qt5Component}_INCLUDE_DIRS})
+    set(QT_DEFINITIONS ${QT_DEFINITIONS} ${Qt5${_qt5Component}_DEFINITIONS})
+    set(QT_LIBRARIES ${QT_LIBRARIES} ${Qt5${_qt5Component}_LIBRARIES})
+  endforeach ()
+  set(QT_LIBRARY_DIR "${_qt5Dir}/lib")
+  set(QT_INCLUDE_DIR "${_qt5Dir}/include")
+
+  macro(qt4_add_translation)
+    qt5_add_translation(${ARGV})
+  endmacro(qt4_add_translation)
+
+  macro(qt4_wrap_cpp)
+    qt5_wrap_cpp(${ARGV})
+  endmacro(qt4_wrap_cpp)
+
+  macro(qt4_add_resources)
+    qt5_add_resources(${ARGV})
+  endmacro(qt4_add_resources)
+else (_qt5Dir)
+  set(_QT4_COMPONENTS QtCore QtGui QtNetwork QtXml)
+  if (WIN32)
+    set(QT_USE_QTMAIN TRUE)
+  endif (WIN32)
+  set(QT_USE_QTDBUS ${WITH_DBUS})
+  find_package(Qt4 COMPONENTS ${_QT4_COMPONENTS} REQUIRED)
+  include (${QT_USE_FILE})
+endif (_qt5Dir)
 include (CheckCXXSourceCompiles)
 find_package(Perl REQUIRED)